Reports on March 8th reveal that Apple Inc. has unveiled a patent related to the iPhone camera, according to the United States Patent and Trademark Office (USPTO).
According to the patent, the company has introduced spatial adjustment of lighting curves based on the camera flash module, targeting the recognition of target areas in the scene. The aim is to eliminate or mitigate the "red-eye effect" in the camera.
It's been noted that the occurrence of "red-eye" is due to the close proximity of the flash axis to the lens axis, causing the pupil to dilate in low light conditions.
When the flash illuminates the retina through the dilated pupil, the dense network of tiny blood vessels reflects the bright red light, creating the phenomenon of "red-eye" in photographs.
The new flash module consists of an array of light emitters, a lens component to image the array onto the illumination area, and a flash controller to control the emitters.
The flash controller is configured to determine that a portion of the user's face, including the eyes, is within the illumination area. It selects a first group of emitters associated with the eyes and a second group associated with the surrounding area to mitigate the red-eye effect in photographs.
